Mechanical Engineering Faculty Research

Title

A Modular Approach to Computer-Aided Auscultation: Analysis and Parametric Characterization of Murmur Acoustic Qualities

Document Type

Article

Publication Date

Spring 7-2013

Abstract

In the present work, a modularized approach to computer-aided auscultation based on the traditional cardiac auscultation of murmur is proposed. Under such an approach, the present paper concerns the task of evaluating murmur acoustic quality character. The murmurs were analyzed in their time-series representation, frequency representation as well as time-frequency representation, allowing extraction of interpretable features based on their signal structural and spectral characters. The features were evaluated using scatter plots, receiver operating characteristic curves (ROC), and numerical experiments using a KNN classifier. The possible physiological and hemodynamical associations with the feature set are made. The implication and advantage of the modular approach are discussed.

Publication Title

Computers in Biology and Medicine

Volume

43

Issue

6

First Page

798

Last Page

805